1WB7

Iron Superoxide Dismutase (Fe-SOD) From The Hyperthermophile Sulfolobus Solfataricus. Crystal Structure of the Y41F mutant.

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	294	CRYSTALS WERE GROWN BY VAPOR DIFFUSION IN HANGING DROPS AT 21C IN A 1 TO 1 MIX OF THE RESERVOIR SOLUTION (8% PEG 8000, 0.1 M TRIS/HCL PH 8.5) AND A PROTEIN SOLUTION (1.45 MG/ML Y41F-SSSOD, 20 MM TRIS/HCL PH 7.8, 1% GLYCEROL).

Crystal Properties
Matthews coefficient	Solvent content
2.2	44

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 75.188	α = 90
b = 121.753	β = 128.74
c = 59.42	γ = 90

Symmetry
Space Group	C 1 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	MARRESEARCH	PT-COATED MIRROR AND SI MONOCHROMATOR	1998-10-24	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	MAX II BEAMLINE I711		MAX II	I711

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	2.24	60.9	99.7	0.09	13.6	4.1		19994			12.4

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.24	2.39	99.8		0.26	5.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1SSS	2.24	29.07	19994	1023	99.6	0.181	0.181	0.209	RANDOM	17.4

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]
1.08		2.61	-0.16		-0.92

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	21.5
c_scangle_it	3.27
c_scbond_it	2.44
c_angle_deg	1.3
c_improper_angle_d	0.76
c_mcangle_it	0.54
c_mcbond_it	0.3
c_bond_d	0.006
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3340
Nucleic Acid Atoms
Solvent Atoms	224
Heterogen Atoms	2

Software

Software
Software Name	Purpose
CNS	refinement
XDS	data reduction
XDS	data scaling